C# Compiler should give warning but doesn't?
- by Cristi Diaconescu
Someone on my team tried fixing a 'variable not used' warning in an empty catch clause.
try { ... } catch (Exception ex) { }
- gives a warning about ex not being used. So far, so good.
The fix was something like this:
try { ... } catch (Exception ex) { string s = ex.Message; }
Seeing this, I thought "Just great, so now the compiler will complain about s not being used."
But it doesn't! There are no warnings on that piece of code and I can't figure out why. Any ideas?
PS. I know catch-all clauses that mute exceptions are a bad thing, but that's a different topic. I also know the initial warning is better removed by doing something like this, that's not the point either.
try { ... } catch (Exception) { }
or
try { ... } catch { }
